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    <title>Document</title>
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        .list {
            border: 1px dotted gray;
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<body>
    <ul id="list1">
        <li>Java</li>
        <li>JavaScript</li>
        <li>Python</li>
    </ul>
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    <!-- <script src='2.js'></script> -->

    <button id="myButton1">Button1</button>
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    <div id="box">test</div>
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